A few days before the opening of the Tokyo Olympics, japan, 20 20. Even though she should really be studying for her final exams, Kokone, a school girl who resides in a little town with her father, a mysterious and talented mechanic, falls asleep frequently, anywhere, anytime, even entering, over and over, a dream world where a group of excellent aerodynamic contraptions fights against magic, a world near reality where she will learn the keys of her true beyond.